Technetium (Tc)
Technetium is the 43rd element in the periodic table and has a symbol of Tc and atomic number of 43. It has an atomic weight of (97.90721) and a mass number of 83. Technetium has forty-three protons and forty neutrons in its nucleus, and forty-three electrons in five shells. It is located in group seven, period five and block d of the periodic table. Radioactive metallic transition element. Can be detected in some stars and the fission products of uranium. First made by Perrier and Segre by bombarding molybdenum with deutrons, giving them Tc-97. Tc-99 is the most stable isotope with a half-life of 2.6*10^6 years. Sixteen isotopes are known. Organic technetium compounds are used in bone imaging. Chemical properties are intermediate between rhenium and manganese.
| Atomic Number | 43 |
|---|---|
| Atomic Weight | 97.90721 |
| Mass Number | 83 |
| Group | 7 |
|---|---|
| Period | 5 |
| Block | d |
| Protons | 43 p+ |
|---|---|
| Neutrons | 40 n0 |
| Electrons | 43 e- |
Physical Properties
| Atomic Radius | |
|---|---|
| Molar Volume | |
| Covalent Radius | |
| Metallic Radius | |
| Ionic Radius | |
| Crystal Radius | |
| Van der Waals Radius | |
| Density |
Chemical Properties
| Energy | |
|---|---|
| Proton Affinity | |
| Electron Affinity | |
| Ionization Energy | |
| Heat of Vaporization | |
| Heat of Fusion | |
| Heat of Formation | |
| Electrons | |
| Electron Shells | 2, 8, 18, 13, 2 |
 | |
| Valence Electrons | 2 ⓘ |
 | |
| Electron Configuration | [Kr] 4d5 5s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d5 5s2 |
  | |
| Oxidation States | -3, -1, 0, 1, 2, 3, 4, 5, 6, 7 |
| Electronegativity |
2.1
|
| Electrophilicity Index | |
| States of Matter | |
| Phase | Solid |
| Gas Phase | |
| Boiling Point | |
| Melting Point | |
| Critical Pressure | |
| Critical Temperature | |
| Triple Point | |
| Visual | |
Technetium is a Silver. Tc has a CPK of #ff1493, Jmol of #3b9e9e, and MOLCAS GV of #3b9e9e. The Appearance of Element 43 is shiny gray metal. | |
| Color | Silver
|
| Appearance | shiny gray metal |
| Refractive Index | |
| Thermodynamic Properties | |
| Thermal Conductivity | |
| Thermal Expansion | |
| Molar Heat Capacity | |
| Specific Heat Capacity | |
| Heat Capacity Ratio (Adiabatic Index) | |
| Electrical Properties | |
| Type | Conductor |
| Electrical Conductivity | |
| Electrical Resistivity | |
| Superconducting Point | |
| Magnetism | |
| Type | paramagnetic |
| Magnetic Susceptibility (Mass) | 0.0000000342 m³/Kg
|
| Magnetic Susceptibility (Molar) | 0.000000003352 m³/mol
|
| Magnetic Susceptibility (Volume) | 0.0003933
|
| Magnetic Ordering | |
| Curie Point | |
| Neel Point | |
| Structure | |
The Crystal Structure of Technetium is HEX. The lattice constant of Tc is 2.74 Å. The lattice angles of Element 43 are π/2, π/2, 2 π/3. | |
| Crystal Structure | Simple Hexagonal (HEX) |
| Lattice Constant | |
| Lattice Angles | π/2, π/2, 2 π/3 |
| Mechanical Properties | |
| Hardness | |
| Bulk Modulus | |
| Shear Modulus | |
| Young's Modulus | |
| Poisson Ratio | |
| Speed of Sound | |
| Classification | |
The CAS Group of Technetium is VIIA. The IUPAC Group of Tc is VIIB. The Glawe Number of Element 43 is 59. The Mendeleev Number of Technetium (Tc) is 56. The Pettifor Number of Technetium is 58. The Goldschmidt Class of Tc is synthetic. | |
| Category | Transition metals, Transition metals |
| CAS Group | VIIA |
| IUPAC Group | VIIB |
| Glawe Number | 59 |
| Mendeleev Number | 56 |
| Pettifor Number | 58 |
| Geochemical Class | |
| Goldschmidt Class | synthetic |
Other
The Dipole Polarizability of Technetium is 79 plus or minus 10 a₀. Tc has a C6 Dispersion Coefficient (GB) of 939 a₀. The Allotropes of Element 43 is . The Neutron Cross Section of Technetium (Tc) is 22. The Quantum Numbers of Technetium is 6S5/2. The Space Group of Tc is 194 (P63/mmc).
| Gas Basicity | |
|---|---|
| Dipole Polarizability | |
| C6 Dispersion Coefficient | |
| Allotropes | |
| Neutron Cross Section | 22
|
| Neutron Mass Absorption | |
| Quantum Numbers | 6S5/2 |
| Space Group | 194 (P63/mmc) |
Isotopes of Technetium
| Stable Isotopes | 0 |
|---|---|
| Unstable Isotopes | 40 |
| Natural Isotopes | 0 |
83Tc
| Mass Number | 83 |
|---|---|
| Neutron Number | 40 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | 1/2 |
| Quadrupole Moment | 0
|
| Discovery Year | |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| p (proton emission) | |
| β+ (β+ decay; β+ = ϵ + e+) | |
| β+ p (β+-delayed proton emission) |
84Tc
| Mass Number | 84 |
|---|---|
| Neutron Number | 41 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | 1 |
| Quadrupole Moment | |
| Discovery Year | |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| p (proton emission) | |
| β+ (β+ decay; β+ = ϵ + e+) | |
| β+ p (β+-delayed proton emission) |
85Tc
| Mass Number | 85 |
|---|---|
| Neutron Number | 42 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | 1/2 |
| Quadrupole Moment | 0
|
| Discovery Year | |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| p (proton emission) |
86Tc
| Mass Number | 86 |
|---|---|
| Neutron Number | 43 |
| Relative Atomic Mass | |
| G-Factor | 0
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 55 ± 7 ms
|
| Spin | 0 |
| Quadrupole Moment | 0
|
| Discovery Year | 1992 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| β+ p (β+-delayed proton emission) |
87Tc
| Mass Number | 87 |
|---|---|
| Neutron Number | 44 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 2.14 ± 0.17 s
|
| Spin | 9/2 |
| Quadrupole Moment | |
| Discovery Year | 1991 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| β+ p (β+-delayed proton emission) | 0.7% |
88Tc
| Mass Number | 88 |
|---|---|
| Neutron Number | 45 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 6.4 ± 0.8 s
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1991 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| β+ p (β+-delayed proton emission) |
89Tc
| Mass Number | 89 |
|---|---|
| Neutron Number | 46 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 12.8 ± 0.9 s
|
| Spin | 9/2 |
| Quadrupole Moment | |
| Discovery Year | 1991 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
90Tc
| Mass Number | 90 |
|---|---|
| Neutron Number | 47 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 49.2 ± 0.4 s
|
| Spin | 8 |
| Quadrupole Moment | |
| Discovery Year | 1974 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
91Tc
| Mass Number | 91 |
|---|---|
| Neutron Number | 48 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 3.14 ± 0.02 m
|
| Spin | 9/2 |
| Quadrupole Moment | |
| Discovery Year | 1974 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
92Tc
| Mass Number | 92 |
|---|---|
| Neutron Number | 49 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 4.25 ± 0.15 m
|
| Spin | 8 |
| Quadrupole Moment | |
| Discovery Year | 1964 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
93Tc
| Mass Number | 93 |
|---|---|
| Neutron Number | 50 |
| Relative Atomic Mass | |
| G-Factor | 1.4044444444444 ± 0.013333333333333
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 2.75 ± 0.05 h
|
| Spin | 9/2 |
| Quadrupole Moment | |
| Discovery Year | 1948 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
94Tc
| Mass Number | 94 |
|---|---|
| Neutron Number | 51 |
| Relative Atomic Mass | |
| G-Factor | 0.73142857142857 ± 0.0071428571428571
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 293 ± 1 m
|
| Spin | 7 |
| Quadrupole Moment | |
| Discovery Year | 1948 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
95Tc
| Mass Number | 95 |
|---|---|
| Neutron Number | 52 |
| Relative Atomic Mass | |
| G-Factor | 1.32 ± 0.013333333333333
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 19.258 ± 0.026 h
|
| Spin | 9/2 |
| Quadrupole Moment | |
| Discovery Year | 1947 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
96Tc
| Mass Number | 96 |
|---|---|
| Neutron Number | 53 |
| Relative Atomic Mass | |
| G-Factor | 0.72714285714286 ± 0.0071428571428571
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 4.28 ± 0.07 d
|
| Spin | 7 |
| Quadrupole Moment | |
| Discovery Year | 1947 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
97Tc
| Mass Number | 97 |
|---|---|
| Neutron Number | 54 |
| Relative Atomic Mass | |
| G-Factor | 1.2933333333333 ± 0.02
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 4.21 ± 0.16 My
|
| Spin | 9/2 |
| Quadrupole Moment | |
| Discovery Year | 1946 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| ϵ (electron capture) | 100% |
98Tc
| Mass Number | 98 |
|---|---|
| Neutron Number | 55 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 4.2 ± 0.3 My
|
| Spin | 6 |
| Quadrupole Moment | |
| Discovery Year | 1955 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β+ (β+ decay; β+ = ϵ + e+) | 0% |
99Tc
| Mass Number | 99 |
|---|---|
| Neutron Number | 56 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 211.1 ± 1.2 ky
|
| Spin | 9/2 |
| Quadrupole Moment | -0.129 ± 0.006
|
| Discovery Year | 1938 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
100Tc
| Mass Number | 100 |
|---|---|
| Neutron Number | 57 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 15.46 ± 0.19 s
|
| Spin | 1 |
| Quadrupole Moment | |
| Discovery Year | 1952 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| ϵ (electron capture) | 0.0018% |
101Tc
| Mass Number | 101 |
|---|---|
| Neutron Number | 58 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 14.22 ± 0.01 m
|
| Spin | 9/2 |
| Quadrupole Moment | |
| Discovery Year | 1941 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
102Tc
| Mass Number | 102 |
|---|---|
| Neutron Number | 59 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 5.28 ± 0.15 s
|
| Spin | 1 |
| Quadrupole Moment | |
| Discovery Year | 1954 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
103Tc
| Mass Number | 103 |
|---|---|
| Neutron Number | 60 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 54.2 ± 0.8 s
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 1957 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
104Tc
| Mass Number | 104 |
|---|---|
| Neutron Number | 61 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 18.3 ± 0.3 m
|
| Spin | 3 |
| Quadrupole Moment | |
| Discovery Year | 1956 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
105Tc
| Mass Number | 105 |
|---|---|
| Neutron Number | 62 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 7.64 ± 0.06 m
|
| Spin | 3/2 |
| Quadrupole Moment | |
| Discovery Year | 1955 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
106Tc
| Mass Number | 106 |
|---|---|
| Neutron Number | 63 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 35.6 ± 0.6 s
|
| Spin | 1 |
| Quadrupole Moment | |
| Discovery Year | 1965 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
107Tc
| Mass Number | 107 |
|---|---|
| Neutron Number | 64 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 21.2 ± 0.2 s
|
| Spin | 3/2 |
| Quadrupole Moment | |
| Discovery Year | 1965 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
108Tc
| Mass Number | 108 |
|---|---|
| Neutron Number | 65 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 5.17 ± 0.07 s
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1970 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
109Tc
| Mass Number | 109 |
|---|---|
| Neutron Number | 66 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 905 ± 21 ms
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 1976 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | 0.08% |
110Tc
| Mass Number | 110 |
|---|---|
| Neutron Number | 67 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 900 ± 13 ms
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1976 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | 0.04% |
111Tc
| Mass Number | 111 |
|---|---|
| Neutron Number | 68 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 350 ± 11 ms
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 1988 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | 0.85% |
112Tc
| Mass Number | 112 |
|---|---|
| Neutron Number | 69 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 323 ± 6 ms
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1990 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | 1.5% |
113Tc
| Mass Number | 113 |
|---|---|
| Neutron Number | 70 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 152 ± 8 ms
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 1992 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | 2.1% |
114Tc
| Mass Number | 114 |
|---|---|
| Neutron Number | 71 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 121 ± 9 ms
|
| Spin | 5 |
| Quadrupole Moment | |
| Discovery Year | 1994 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | 1.3% |
115Tc
| Mass Number | 115 |
|---|---|
| Neutron Number | 72 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 78 ± 2 ms
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 1994 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) |
116Tc
| Mass Number | 116 |
|---|---|
| Neutron Number | 73 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 57 ± 3 ms
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1997 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | |
| 2n (2-neutron emission) |
117Tc
| Mass Number | 117 |
|---|---|
| Neutron Number | 74 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 44.5 ± 3 ms
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 1997 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | |
| 2n (2-neutron emission) |
118Tc
| Mass Number | 118 |
|---|---|
| Neutron Number | 75 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 30 ± 4 ms
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 2010 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | |
| 2n (2-neutron emission) |
119Tc
| Mass Number | 119 |
|---|---|
| Neutron Number | 76 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 22 ± 3 ms
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 2010 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | |
| 2n (2-neutron emission) |
120Tc
| Mass Number | 120 |
|---|---|
| Neutron Number | 77 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 21 ± 5 ms
|
| Spin | 3 |
| Quadrupole Moment | |
| Discovery Year | 2010 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | |
| 2n (2-neutron emission) |
121Tc
| Mass Number | 121 |
|---|---|
| Neutron Number | 78 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 22 ± 6 ms
|
| Spin | 5/2 |
| Quadrupole Moment | |
| Discovery Year | 2015 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β− n (β−-delayed neutron emission) | |
| 2n (2-neutron emission) |
122Tc
| Mass Number | 122 |
|---|---|
| Neutron Number | 79 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | 1 |
| Quadrupole Moment | |
| Discovery Year | 2018 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | |
| β− n (β−-delayed neutron emission) | |
| 2n (2-neutron emission) |
History
Element 43 was predicted on the basis of the periodic table, and was erroneously reported as having been discovered in 1925, at which time it was named masurium. The element was actually discovered by Carlo Perrier and Emilio Segrè in 1937. It was also found in a sample of molybdenum sent by Ernest Lawrence that was bombarded by deuterons in the Berkeley cyclotron. From the Greek word technetos, artificial
| Discoverers | Carlo Perrier, Émillo Segrè |
|---|---|
| Discovery Location | Italy |
| Discovery Year | 1937 |
| Etymology (Name Origin) | Greek: technêtos (artificial). |
| Pronunciation | tek-NEE-shi-em (English) |
Technetium is harmful due to its radioactivity
Technetium was the first element to be produced artificially
Uses
Technetium is used in nuclear medicine to carry out a number of medical tests, mainly relating to imaging and functional studies of internal bodily organs like bone scan. It is also used industrially for equipment calibration following its approval as a standard beta emitter. Mild carbon steels may be effectively protected by minute quantities of technetium, but this corrosion protection is limited to closed systems because of technetium's radioactivity. Added to iron in quantities as low as 55 part-per-million transforms the iron into a corrosion-resistant alloy.
Sources
Made first by bombarding molybdenum with deuterons (heavy hydrogen) in a cyclotron.
| Abundance | |
|---|---|
| Abundance in Earth's crust | |
| Natural Abundance (Oceans) | |
| Natural Abundance (Human Body) | 0 %
|
| Natural Abundance (Meteor) | 0 %
|
| Natural Abundance (Sun) | 0 %
|
| Abundance in Universe | 0 %
|
Nuclear Screening Constants
| 1 | s | 0.891 |
| 2 | p | 4.0592 |
| 2 | s | 11.3718 |
| 3 | d | 14.647 |
| 3 | p | 16.6159 |
| 3 | s | 16.2088 |
| 4 | d | 30.118 |
| 4 | p | 27.1888 |
| 4 | s | 25.8016 |
| 5 | s | 35.7735 |
Also Known As
- Tc
- element 43
- 43Tc
- masurium
- panormium
- eka-manganese
Translations
- Norwegian Bokmåltechnetium
- Russianтехнеций
- Italiantecnezio
- Frenchtechnétium
- GermanTechnetium
- Polishtechnet
- Dutchtechnetium
- Norwegian Nynorsktechnetium
- Danishtechnetium
- Swedishteknetium
- WelshTechnetiwm
- Hungariantechnécium
- Afrikaanstegnesium
- Amharicቴክኔቲየም
- AragoneseTecnecio
- Arabicتكنيشيوم
- AzerbaijaniTexnesium
- BelarusianТэхнецый
- Bulgarianтехнеций
- Banglaটেকনেশিয়াম
- BretonTeknetiom
- Bosniantehnecij
- Catalantecneci
- CorsicanTecneziu
- Czechtechnecium
- ChuvashТехнеци
- Greekτεχνήτιο
- Esperantoteknecio
- Spanishtecnecio
- EstonianTehneetsium
- Basqueteknezio
- Persianتکنسیم
- Finnishteknetium
- FriulianTecnezi
- IrishTeicnéitiam
- GalicianTecnecio
- ManxÇheghnaiçhum
- Hakka Chinesetechnetium
- Hebrewטכנציום
- Hindiटेक्निशियम
- Fiji HindiTechnetium
- CroatianTehnecij
- Haitian CreoleTèknesyòm
- Armenianտեխնեցիում
- Interlinguatechnetium
- Indonesianteknesium
- Idoteknecio
- Icelandicteknetín
- Japaneseテクネチウム
- Lojbanrunjinme
- Georgianტექნეციუმი
- Kannadaಟೆಕ್ನೀಶಿಯಮ್
- Korean테크네튬
- KurdishTeknesyûm
- KomiТехнеций
- Latintechnetium
- LuxembourgishTechnetium
- LigurianTecnesio
- LithuanianTechnecis
- Latviantehnēcijs
- Malayalamടെക്നീഷ്യം
- Marathiटेक्नेटियम
- Western MariТехнеций
- MalayTeknetium
- OccitanTecnèci
- Punjabiਟੈਕਨੀਸ਼ੀਅਮ
- Western Panjabiٹیکنیٹیم
- Portuguesetecnécio
- QuechuaTeknesyu
- Romaniantechnețiu
- Sicilianticnezziu
- Serbo-CroatianTehnicijum
- Slovaktechnécium
- SlovenianTehnecij
- Serbianтехнецијум
- Saterland FrisianTechnetium
- SwahiliTekineti
- Tamilடெக்னீசியம்
- Teluguటెక్నీషియమ్
- Thaiเทคนีเชียม
- TurkishTeknesyum
- Uyghurتېخېتىسىي
- Ukrainianтехнецій
- UzbekTexnetsiy
- VepsTehnecii
- Vietnamesetecneti
- WarayTecnesyo
- KalmykТехнециүм
- YorubaTechnetium
- Chinese锝
- KazakhТехнеций
- CebuanoTeknesyo
- Macedonianтехнециум
- Central Kurdishتێکنیشیۆم
- Gujaratiટેક્નેશિયમ
- Odiaଟେକ୍ନିସିଅମ
- ScotsTechnetium
- TatarТехнеций
- PiedmonteseTecnessi
- SomaliTeknetiyaam
- Newariटेक्नेसियम
- Cantonese鎝
- Belarusian (Taraskievica orthography)тэхнэц
- AlbanianTeknetiumi
- Literary Chinese鍀
- AromanianTehnețiu
- KyrgyzТехнеций
- Burmeseတက္ကနက်တီယမ်
- Paliटेक्नेसियम
- Sanskritटेक्नेसियम
- LombardTecnesio
- Malteseteknezju
- Scottish GaelicTeicnetium
- Portuguese (Brazil)tecnécio
- LimburgishTechnetium
- cdoTechnetium
- Min Nan ChineseTechnetium
- AsturianTecneciu
- Bhojpuriटेक्नेसियम
- Mongolianтехнеци
- Tibetanཊེག་ནི་ཤིམ།
- TagalogTechnetium
- Tajikтехнеций
- oloTehnecii
- kbpTɛkɩnɛsɩyɔm
- Lingua Franca Novatecnesio
- Northern FrisianTechnetium
- Volapükteknetin
- Nepaliटेक्निशियम
- Chinese (Traditional)鎝
- Chinese (Taiwan)鎝
- Yiddishטעכנעטיום
- Chinese (Simplified)锝
- Chinese (China)锝
- Chinese (Singapore)锝
- Chinese (Malaysia)锝
- Chinese (Hong Kong SAR China)鍀
- Chinese (Macao SAR China)鍀
- Wu Chinese锝
- SardinianTecnètziu
- KotavaTcetiel
- Moroccan Arabicطيكنيتيوم
- BashkirТехнеций
- Egyptian Arabicتكنيشيوم
- Pashtoټېکنېټيوم
- CornishTeknetiom
- BalineseTéknésium
- BikolTeknesyo
- Urduٹیکنیشیئم
- ZuluUmThanyambi
